PaulB,

My husband developed Mucositis over the weekend and diagnosed Monday. He had to cancel RT today because he was too sick. I called the RO and they had me bring him in immediately. I asked the RO leading questions based on the questions that I hear from you and the fellow posters. He explained to my husband that the lymph nodes under the chin could be cancerous and that doctors are not perfect and they can't possibly see every cancerous cell so RT is the only answer.

I would describe the neck level as the lower half of the left side.

Thanks